Get confident about your Azure DNS setup now.

Discovers your Azure DNS zones — public and private — across your subscriptions. Validates them against 42 health and email security rules. Alerts your team via Teams, Slack, email or webhooks before misconfigurations cause outages.

DNS Tool illustration

Get confident about your Azure DNS setup now.

Discovers your Azure DNS zones — public and private — across your subscriptions. Validates them against 42 health and email security rules. Alerts your team via Teams, Slack, email or webhooks before misconfigurations cause outages.

DNS Tool illustration

What DNS Tool Does

DNS misconfigurations are silent. A dangling CNAME, a missing SOA, an orphaned private zone — none of these raise an alert in Azure. You find out when mail stops being delivered, a subdomain is taken over, or an internal service quietly stops resolving. DNS Tool for Azure connects to your tenant with read-only access, discovers your DNS zones and records automatically, and validates them against 42 built-in health and email security rules. Checks run on a schedule — daily, six-hourly, hourly or every 15 minutes depending on plan — and findings are routed to Microsoft Teams, Slack, email or webhooks. No agents, nothing deployed in your tenant, and no DNS record is ever modified.

What DNS Tool Does

DNS misconfigurations are silent. A dangling CNAME, a missing SOA, an orphaned private zone — none of these raise an alert in Azure. You find out when mail stops being delivered, a subdomain is taken over, or an internal service quietly stops resolving. DNS Tool for Azure connects to your tenant with read-only access, discovers your DNS zones and records automatically, and validates them against 42 built-in health and email security rules. Checks run on a schedule — daily, six-hourly, hourly or every 15 minutes depending on plan — and findings are routed to Microsoft Teams, Slack, email or webhooks. No agents, nothing deployed in your tenant, and no DNS record is ever modified.

Benefits

Key Benefits of DNS Tool

Benefits

Key Benefits of DNS Tool

A DNS inventory that stays current

Zones and records discovered automatically and kept live, with change history — instead of a spreadsheet that is stale the day after it is written.

Catch misconfigurations before they cause outages

42 built-in rules flag dangling CNAMEs, broken delegations, missing SOA records and orphaned zones.

Close email security gaps

Validation of DKIM, MX and TTL anomalies alongside SPF, DMARC, MTA-STS and TLS-RPT, so missing or malformed authentication records surface immediately. Starter and up.

Certificate and domain expiry warnings

Certificate Transparency monitoring detects newly issued — and unauthorised — certificates for your domains. RDAP monitoring warns you before a registration lapses. Certificate monitoring from Starter, RDAP from Professional.

Alerts that reach the right people — risk-scored

Teams, Slack, email or webhooks, with per-rule routing, weekly digests and suppression during maintenance windows. Every DNS change is scored for risk, so a routine record update and a change that could break mail delivery do not arrive as the same alert. Professional and up.

Read-only and agentless

Consent once, read-only. Nothing runs in your tenant and no record is ever changed.

Core Features Designed for Your Success

The essential capabilities that make DNS Tool a read-only, Azure-native DNS monitor for modern IT environments.

Core Features Designed for Your Success

The essential capabilities that make DNS Tool a read-only, Azure-native DNS monitor for modern IT environments.
Multi-subscription zone discovery

Public and private zones enumerated automatically as the estate changes. Private DNS zone monitoring from Professional.

Multi-subscription zone discovery

Public and private zones enumerated automatically as the estate changes. Private DNS zone monitoring from Professional.

42 validation rules

Zone health, record hygiene and email security, on every scan. Core health validation is on every plan; email security validation from Starter.

42 validation rules

Zone health, record hygiene and email security, on every scan. Core health validation is on every plan; email security validation from Starter.

Change history, drift detection and risk scoring

What changed, when, what it looked like before, and how risky the change was. Retention from 7 days to 1 year by plan.

Change history, drift detection and risk scoring

What changed, when, what it looked like before, and how risky the change was. Retention from 7 days to 1 year by plan.

Subdomain takeover and CAA/DNSSEC checks

Takeover scoring, CAA audit, DNSSEC monitoring and unauthorised CA detection. Takeover scoring and CAA audit from Professional; DNSSEC and unauthorised CA detection on Enterprise.

Subdomain takeover and CAA/DNSSEC checks

Takeover scoring, CAA audit, DNSSEC monitoring and unauthorised CA detection. Takeover scoring and CAA audit from Professional; DNSSEC and unauthorised CA detection on Enterprise.

Certificate Transparency and RDAP monitoring

New certificates issued for your domains, and approaching domain expiry. Certificate monitoring from Starter, RDAP from Professional.

Certificate Transparency and RDAP monitoring

New certificates issued for your domains, and approaching domain expiry. Certificate monitoring from Starter, RDAP from Professional.

Alert routing and suppression

Teams, Slack, email and webhooks, with maintenance windows, on-demand rescan and audit trail export. Teams, Slack and webhooks from Professional.

Alert routing and suppression

Teams, Slack, email and webhooks, with maintenance windows, on-demand rescan and audit trail export. Teams, Slack and webhooks from Professional.

How DNS Tool Works

Simple by design — subscribe, consent once, and your zones are discovered within minutes.

How DNS Tool Works

Simple by design — subscribe, consent once, and your zones are discovered within minutes.
1
Subscribe on Microsoft Marketplace

Start on the Free plan or pick a paid tier; purchased and billed through Microsoft Marketplace.

1
Subscribe on Microsoft Marketplace

Start on the Free plan or pick a paid tier; purchased and billed through Microsoft Marketplace.

2
Grant read-only consent

One consent step, no agents, nothing deployed.

2
Grant read-only consent

One consent step, no agents, nothing deployed.

3
Your zones are discovered

Inventory built within minutes of consent.

3
Your zones are discovered

Inventory built within minutes of consent.

4
Scans run and your team is alerted

Validation on your plan schedule, findings routed to your channels.

4
Scans run and your team is alerted

Validation on your plan schedule, findings routed to your channels.

Who DNS Tool is For

Teams that own DNS across several Azure subscriptions and need it watched continuously rather than audited annually.

Who DNS Tool is For

Teams that own DNS across several Azure subscriptions and need it watched continuously rather than audited annually.
Platform and cloud operations teams

Own DNS across many subscriptions and need one live view of it.

Security teams

Need email authentication, subdomain takeover exposure and certificate issuance watched continuously rather than audited annually.

Compliance-driven organisations

Need evidence that DNS and email security configuration is reviewed on a schedule (NIS2, ISO 27001, D-mærket). Compliance reports and audit trail export are the relevant hooks.

MSPs and service providers

Manage DNS in customer tenants and want drift and expiry warnings before the customer notices. Setup is per tenant; the Enterprise REST API is the route to aggregation today.

Microsoft Marketplace

Start free on Microsoft Marketplace

Monitor up to 5 zones at no cost, with no time limit. Upgrade when you need more zones, faster scans or Teams and Slack alerting — purchased and billed through Microsoft Marketplace.
Microsoft Marketplace

Start free on Microsoft Marketplace

Monitor up to 5 zones at no cost, with no time limit. Upgrade when you need more zones, faster scans or Teams and Slack alerting — purchased and billed through Microsoft Marketplace.

Pricing

Pricing

Free

$0.00

MONTHLY

5 zones, 1 subscription

Zone and record discovery · Core health validation · Zone inventory export · Daily scan interval · 7-day data retention · No notifications · No time limit

Free

$0.00

MONTHLY

5 zones, 1 subscription

Zone and record discovery · Core health validation · Zone inventory export · Daily scan interval · 7-day data retention · No notifications · No time limit

Starter

$49.00

MONTHLY

25 zones, 3 subscriptions

Everything in Free, plus: Email security validation · NS consistency checks · Certificate monitoring (CT logs) · Email notifications and weekly digest · Alert rules for DNS changes

$490.00

ANNUAL

10x the monthly price — two months free

Starter

$49.00

MONTHLY

25 zones, 3 subscriptions

Everything in Free, plus: Email security validation · NS consistency checks · Certificate monitoring (CT logs) · Email notifications and weekly digest · Alert rules for DNS changes

$490.00

ANNUAL

10x the monthly price — two months free

Professional

$149.00

MONTHLY

100 zones, 10 subscriptions

Everything in Starter, plus: Private DNS zone monitoring · Domain expiry monitoring (RDAP) · Change risk scoring · Teams, Slack and webhook alerts · Maintenance windows and on-demand rescan · CAA audit and subdomain takeover scoring · Audit trail export

$1,490.00

ANNUAL

10x the monthly price — two months free

Professional

$149.00

MONTHLY

100 zones, 10 subscriptions

Everything in Starter, plus: Private DNS zone monitoring · Domain expiry monitoring (RDAP) · Change risk scoring · Teams, Slack and webhook alerts · Maintenance windows and on-demand rescan · CAA audit and subdomain takeover scoring · Audit trail export

$1,490.00

ANNUAL

10x the monthly price — two months free

Enterprise

$399.00

MONTHLY

Unlimited zones and subscriptions

Everything in Professional, plus: DNSSEC monitoring · Unauthorised CA detection · Zone drift detection · Point-in-time snapshots · Compliance reports · REST API access

$3,990.00

ANNUAL

10x the monthly price — two months free

Enterprise

$399.00

MONTHLY

Unlimited zones and subscriptions

Everything in Professional, plus: DNSSEC monitoring · Unauthorised CA detection · Zone drift detection · Point-in-time snapshots · Compliance reports · REST API access

$3,990.00

ANNUAL

10x the monthly price — two months free

FAQ's

DNS Tool FAQ

FAQ's

DNS Tool FAQ

What does DNS Tool check?
Does it change anything in my DNS?
Does it cover private DNS zones?
How often does it scan?
How do alerts reach my team?
Is there a free plan?
Where is data processed and stored?

Ready to simplify your IT operations?

Explore our products or talk with us about your environment.

Ready to simplify your IT operations?

Explore our products or talk with us about your environment.